i think my speedo packed up on sat when i hit a bump hard and the wheel flexed making the magnet smack into the wireless sensor. although it's not visibly broken it seems to miss every 2nd or 3rd pulse so the speed shown is only half or 2/3 what it should be - i swear!
anyone, i have a big hole in my new excel sheet of training times and distances.
can anyone in the main group fill me in on the distance from Coulsdon - Charlwood - Box Hill - Coulsdon?
cheers